My BJJ class uses a "rotating curriculum", although I have never heard that term. We all work on the same technique each class. We are all white belts, though. My AKK school did not, however. Each belt rank (indeed each person) had their own curriculum. (as far as what techniques were worked on in a given class)

_________________________"In case you ever wondered what it's like to be knocked out, it's like waking up from a nightmare only to discover it wasn't a dream." -Forrest Griffin